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Mussel Density Quadrat Sampling Locations in West Newton Chute from 2008 to 2017

Metadata Updated: July 6, 2024

Since 2008, over 1,400 quadrats and about 2,500 mussels have been systematically sampled within West Newton Chute (WNC), contributing to a diverse assemblage of 25 live species, including 2 federally endangered species, and 10 Minnesota listed species. West Newton Chute is a 2.4 km long side channel in Navigation Pool 5 of the Upper Mississippi River and has an overall aquatic area of ~75 ha. The Minnesota Department of Natural Resources has been quantitatively sampling a mussel bed here (~650 meters long X 170 meters wide) annually since 2008. About 200 systematically-placed 0.25 m2 quads are sampled annually and the quads are spaced ~25 m apart. Briefly, divers excavate substrates to a depth of ~15 cm and place material into a 6-mm mesh bag. Mussels are identified to species, aged via external annuli, measured for shell length, and sexed in externally dimorphic species. Mussel counts for each unique quadrat location are converted to density (number /m2). This dataset likely contains the most spatially and temporally extensive data on freshwater mussels in large rivers. The mussel dataset from WNC has not been thoroughly examined and represents an unprecedented opportunity to explore how biological traits vary over time in an established mussel bed. We explored how specific biological traits, including total density, juvenile density, species-specific density, species richness, and age change over space and time. In addition, we explored spatial and temporal changes in species assemblages as related to variation in life history strategies (i.e., equilibrium, opportunistic, and periodic strategies), phylogeny (i.e., tribe-level classification), and conservation status (e.g., declining vs. currently stable). These data will inform scientists and managers about how natural mussel assemblages vary over time and may identify sensitive biological response metrics that can be used to evaluate effects of habitat restoration activities on native mussels in large rivers.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Created Date June 1, 2023
Metadata Updated Date July 6, 2024

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date June 1, 2023
Metadata Updated Date July 6, 2024
Publisher U.S. Geological Survey
Maintainer
@Id http://datainventory.doi.gov/id/dataset/f25333e37ea3b8adbfe2c1c848f2eba1
Identifier USGS:5de563e2e4b02caea0e8fb0a
Data Last Modified 20220616
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://datainventory.doi.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id d053c06f-1caf-4d70-9c3c-e90707f87122
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -91.9173,44.2691,-91.9101,44.2729
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash 52e9c75acbde4678207432d54a1925670fd1b348cfe61837f2650c4d4f0d712b
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -91.9173, 44.2691, -91.9173, 44.2729, -91.9101, 44.2729, -91.9101, 44.2691, -91.9173, 44.2691}

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